// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.from
description: Setting length of object (traversed via iterator)
info: |
    [...]
    6. If usingIterator is not undefined, then
       [...]
       g. Repeat
          [...]
          iv. If next is false, then
              1. Let setStatus be Set(A, "length", k, true).
              2. ReturnIfAbrupt(setStatus).
              3. Return A.
features: [Symbol.iterator]
---*/

function Test() {
    var items = {};
    var result, nextIterResult, lastIterResult;
    items[Symbol.iterator] = function() {
      return {
        next: function() {
          var result = nextIterResult;
          nextIterResult = lastIterResult;
          return result;
        }
      };
    };

    nextIterResult = lastIterResult = {
      done: true
    };
    result = Array.from(items);

    assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');

    nextIterResult = {
      done: false
    };
    lastIterResult = {
      done: true
    };
    result = Array.from(items);

    assert.sameValue(result.length, 1, 'The value of result.length is expected to be 1');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
